the Hook EXT
Pushing the limits of what you can tackle, the radical EXT offers uprated strength and manoeuvrability.
- * Shown size M. Final product may vary in appearance, finish, minor details
"As capable on backcountry campouts as it is on post-work blasts, the Hook EXT remains the choice when you’re unsure of the terrain, but know you want to have fun riding it."
Introducing the Hook EXT
The Hook’s hoodlum tendencies given free rein. Using a Columbus steel frame, dedicated carbon fork, and lively 27.5-inch wheels, the EXT can batter through territory out-of-bounds to other drop handlebar bikes. Backed by Sram’s 1 x 11 Rival groupset, this provides both the gearing range and braking power needed for extreme riding. Adding more build options, this year sees the addition of an integrated rear light mount. As capable on backcountry campouts as it is on post-work blasts, the Hook EXT remains the choice when you’re unsure of the terrain, but know you want to have fun riding it.
- * Columbus Cromor double butted frame with rear light mount.
- * Full carbon tapered fork with internal light cable routing, through axles and triple cage mounts.
- * Hydraulic Sram Rival 1 x 11 groupset and brakes.
- * Bombtrack Lyer 30 mm alluminium crank with 40 T direct mount chainring.
- * Bombtrack Tau 12 mm through axle hubs.
- * KMC X11 EPT Anti Rust Chain.
- * Wide rims for improved tire performance.
- * Toptube bag direct mounts, triple cage mount on downtube and seattube for optimized bottle position, bottle cage mounts underneath the downtube and rear rack mounts.
" I love to see a bike that’s completely ready for bikepacking or light touring just as it is, and the Hook EXT is exactly that. Everything is accounted for braze on-wise: three on each blade of the fork, six within the frame (allowing for lots of water bottle placement options if you’re running a partial framebag), and two below it, plus provision for mudguards, ideal for winter commuting. There are eyelets for a direct mount top tube bag, too. "
@Cass Gilbert / Bikepacking.com
Color 1 Matt Metallic Grey Blue Color 2 - Frame COLUMBUS CROMOR double butted tubing, TA, rack / fender mounts, internal light cable routing, rear light mount, 86.5 mm T47 BB shell Fork Full carbon, TA, 1.1/2'' - 1.1/8'', fender / triple cage mounts, internal hub dynamo cable routing Handlebar BOMBTRACK CX-10 drop bar, 31.8 mm, 10° flare Grips BOMBTRACK ESCAPE bar tape Stem BOMBTRACK ROAM forged aluminium stem, -7° Headset Sealed external aheadset, 1.1/2'' - 1.1/8'' Levers SRAM RIVAL 1 double tap hydraulic Shifter SRAM RIVAL 1 double tap 1 x 11 Brakes SRAM RIVAL flat mount hydraulic disc brakes with 160 mm rotors Crankset BOMBTRACK LYER forged aluminium crank, direct mount interface (SRAM compatible), 30 mm spindle BB BOMBTRACK T47 internal sealed BB for 30 mm spindle Pedals - Chain KMC X11 EPT Anti Rust chain, 1/2'' x 11/128'', 114L Chainring CNC machined aluminium, narrow-wide, 40 T Cassette SRAM PG-1130 11-speed, 11 - 42 T Front derailleur - Rear derailleur SRAM RIVAL 1, clutch, long cage Front hub BOMBTRACK TAU sealed disc hub, 12 x 100 mm thru-axle Rear hub BOMBTRACK TAU sealed disc hub, 11-speed, 12 x 142 mm thru-axle Front rim WTB ST Light i25 double wall, TCS 2.0, 32h Rear rim WTB ST Light i23 double wall, TCS 2.0, 32h Saddle BOMBTRACK COMP saddle Seat post BOMBTRACK YEW aluminium seatpost, 27.2 mm x 300 mm Seat clamp BOMBTRACK ORIGIN forged aluminium seat clamp, 29.8 mm Front tire WTB RANGER TCS LIGHT / FAST ROLLING 27.5'' x 2.0'', tubeless ready Rear tire WTB RANGER TCS LIGHT / FAST ROLLING 27.5'' x 2.0'', tubeless ready Fender - Rack - Light - Weight 11.2 kg (size M) Weight frameset 2710 g frame (size L, incl. TA, hanger)
600 g fork (300 mm steerer, incl. TA)
Maximum rider weight 130 kg incl. Luggage ASTM riding condition 2
BB Standard T47 - 86.5 mm shell width Headset Standard (S.H.I.S.) EC34 / 28.6 | EC44 / 40 Fork Max Tire Clearance w/o fender 650B x 52C / 700C x 45C Frame Max Tire Clearance w/o fender 650B x 52C / 700C x 40C Maximum chainring clearance 1x 44 T with 45 mm chainline Maximum chainring clearance 2x 50 / 36 T with 45 mm chainline Seat Post Diameter 27.2 mm Seat clamp diameter 29.8 mm Brake mount front FM Brake mount rear FM Maximum rotor clearance front 160 mm Maximum rotor clearance rear 160 mm Front through axle 12 mm x 100 mm, 1.5 TPI Rear through axle 12 mm x 142 mm, 1.5 TPI Derailleur hanger BT-DH-008 ISO testing standard Road Crankarm XS 165 mm / S - M 170 mm / L - XL 175 mm Q Factor 152 mm BCD crank direct mount (Sram compatible) Chainline 45 mm Spoke length front wheel tba Spoke length rear wheel tba Spoke count (front / rear) 32 / 32 ERD 570 mm Front hub PCD 58 mm Rear hub PCD 58 mm Stem Length XS - S 80 mm / M 90 mm / L - XL 100 mm Stem angle -7° Headset Spacers 1 x 10 mm, 2 x 5 mm Seat post offset 0 mm Seat post length 300
Bike Size XS S M L XL Wheel size 27.5'' 27.5'' 27.5'' 27.5'' 27.5'' Seat Tube Length 460 500 530 570 600 Horizontal TT length 519 533 556 570 595 Seat Angle 74.5° 74.5° 74.0° 74.0° 74.0° Head Angle 71.5° 71.5° 72.0° 72.0° 72.0° Headtube Length 110 130 150 170 190 BB Drop 75 75 70 70 70 Chainstay Length 425 425 425 425 425 Fork Offset 48 48 48 48 48 Trail 65 65 62 62 62 Wheelbase Length 995 1010 1025 1040 1060 Standover 748 776 803 831 855 Reach 365 374 387 396 409 Stack 554 573 589 608 627 Front Center 581 596 610 625 645 Axle to Crown 398 398 398 398 398 Minimum rider height * 1500 1600 1700 1790 1880 Maximum rider height * 1610 1710 1810 1900 1990
* Our bike size recommendation generally represents a rough guideline for quickly narrowing down the sizes from which to choose based on the body height. Bike fitting is a complex topic and other measurements and factors have to be accounted for as well. Since no two human bodys are exactly the same it is not possible to give a 100% correct advice for everyone. Therefore BOMBTRACK cannot guarantee for the stated recommendations to be correct for every individual customer. The best way to work out the correct size is to consult a local BOMBTRACK dealer or a professional bike fitter and have them determine the needed size.
Bike Size XS S M L XL Handlebar type Dropbar Dropbar Dropbar Dropbar Dropbar Width (drops) 400 420 420 440 440 Width (barends) 446 466 466 486 486 Reach 75 75 75 75 75 Flare 10° 10° 10° 10° 10° Backsweep - - - - - Drop 116 116 116 116 116 Upsweep - - - - - Rise - - - - -